7
1
9
3
5
3
6
2
1
9
9
3
7
9
6
2
3
1
8
8
1
3
5
9
6
2
9
1
3
8
7
1
9
3
7
9
5
3
1
7
3
4
5
9

This Sudoku Puzzle has 42 steps and it is solved using Locked Candidates Type 1 (Pointing), Naked Pair, Naked Single, Hidden Single, Full House techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Locked Candidates Type 1 (Pointing): 2 in b1 => r8c1<>2
2. Locked Candidates Type 1 (Pointing): 4 in b4 => r4c89<>4
3. Locked Candidates Type 1 (Pointing): 5 in b4 => r4c89<>5
4. Locked Candidates Type 1 (Pointing): 8 in b8 => r2c5<>8
5. Naked Pair: 2,6 in r49c9 => r238c9<>6, r38c9<>2
6. Row 8 / Column 9 → 1 (Naked Single)
7. Row 2 / Column 8 → 1 (Hidden Single)
8. Row 2 / Column 1 → 6 (Hidden Single)
9. Row 8 / Column 1 → 8 (Naked Single)
10. Row 2 / Column 2 → 8 (Hidden Single)
11. Row 7 / Column 7 → 8 (Hidden Single)
12. Row 1 / Column 7 → 2 (Naked Single)
13. Row 3 / Column 7 → 6 (Full House)
14. Row 1 / Column 1 → 4 (Naked Single)
15. Row 1 / Column 8 → 8 (Full House)
16. Row 3 / Column 3 → 5 (Naked Single)
17. Row 3 / Column 1 → 2 (Full House)
18. Row 4 / Column 1 → 5 (Full House)
19. Row 4 / Column 2 → 4 (Full House)
20. Row 3 / Column 8 → 4 (Naked Single)
21. Row 9 / Column 2 → 2 (Naked Single)
22. Row 7 / Column 2 → 5 (Full House)
23. Row 3 / Column 9 → 7 (Naked Single)
24. Row 2 / Column 9 → 5 (Full House)
25. Row 3 / Column 6 → 8 (Full House)
26. Row 6 / Column 8 → 5 (Naked Single)
27. Row 6 / Column 9 → 4 (Full House)
28. Row 9 / Column 9 → 6 (Naked Single)
29. Row 4 / Column 9 → 2 (Full House)
30. Row 8 / Column 8 → 2 (Full House)
31. Row 4 / Column 8 → 6 (Full House)
32. Row 9 / Column 3 → 4 (Naked Single)
33. Row 7 / Column 3 → 6 (Full House)
34. Row 9 / Column 5 → 8 (Full House)
35. Row 8 / Column 5 → 7 (Naked Single)
36. Row 8 / Column 4 → 6 (Full House)
37. Row 7 / Column 4 → 4 (Naked Single)
38. Row 5 / Column 4 → 7 (Full House)
39. Row 7 / Column 5 → 2 (Full House)
40. Row 2 / Column 5 → 4 (Full House)
41. Row 5 / Column 6 → 4 (Full House)
42. Row 2 / Column 6 → 7 (Full House)